"Well, I don’t know what the particulars are," Clinton said. "As
you might remember, during the campaign he introduced a
single-payer bill every year he was in Congress — and when
somebody finally read it, he couldn’t explain it and couldn’t
really tell people how much it was going to cost."

Clinton also highlighted what she saw as potential flaws in
selling such a plan: special interests and public sentiment.

"When I was working on healthcare back in in '93 and '94, I said
if we could’ve waved the magic wand and started all over, maybe
we would start with something resembling single-payer plus other
payers, like other countries that have universal coverage and are
much better at controlling costs than we do, primarily in
Europe,"
Clinton said. "But we were facing the reality of not just
strong, powerful forces but people’s own fears as well as their
appreciation for what they already had."

Clinton has been promoting her new book, "What
Happened," which details her thoughts on her failed 2016 bid
for president. The book
sharply criticizes Sanders, who Clinton believes aided
President Donald Trump's eventual victory.